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<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
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    <title>Document</title>
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<body>
    <!-- 练习2：有已知以下某公司员工薪金信息，把每一位员工的salary薪金信息 加 2000，并返回新数组，注意：不影响原数组 -->

<script>
    let persons = [
    {
        username:'张飞',
        sex:'男',
        salary:50000 
    },
    {
        username:'关羽',
        sex:'男',
        salary:60000
    }
] 
let news = JSON.stringify(persons)
persons.forEach(function(item,index){
let S = item.salary += 2000

})
console.log(news)
console.log(persons)
</script>
</body>
</html>